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About Injectors

Herb Sanborn at
the test bench. After reconditioning all injectors are run at
very high speeds and fuel
volumes on our custom test bench. Injector
pulses must also be clean and crisp at very low speeds.

With the exception of more modern automotive
electronic injectors very few are interchangable. Spica, Bosch and
Kugelfischer produced high pressure mechanical injectors for Alfas,
Porsches and BMW's. Kugelfischer injectors were also fitted to several
types of racecars.

Operating pressures range from 250 to 350 psi.

Do not throw any injectors away after failing a
static test. They cannot be fully tested with static pressure testers
as used on diesel systems. They must be dynamically tested and pulsed
with very high volumes of fuel at several different engine speeds.

Rust from long term storage can destroy injectors.

They are precise and complex devices with very
high quality materials and components. New injectors have not been
available since about 1995. Good used injectors have become rare and
valuable.

Pumps we receive for rebuilding usually include
the injectors.

Kugelfischer
Injectors
Injectors on the right have the rust we typically see before cleaning.
For more info on our Kugelfischer services, click
here.